Fig 4. Modification of time from ambulance contact to hospital arrival and first defibrillation.

The square box indicates no adjustments. The two ends of the color spectrum show a 6% increase and decrease in predicted CPC1/2, respectively. Overall, reducing the time for hospital arrival improved outcomes, whereas delays worsened them. A reduced time to defibrillation strengthened this trend, but it was obscured when the time to defibrillation was reduced by more than 3 min or delayed by more than 2 min. CPC, cerebral performance category.